Human-Mediated Dispersal of Seeds by the Airflow of Vehicles
Figure 2
Probability distributions of seeds along the study road after 80 vehicle passes.
(A) Ailanthus altissima (B) Clematis vitalba, (C) Ambrosia artemisiifolia and (D) Brassica napus. Filled circles represent the mean (±95% CI) probabilities of 10 replicates. The grey lines show the fitted dispersal functions. Open triangles show mean probabilities for seeds to reach the road verge at that distance along the line of travel. The y-axis is on a log scale and 0.0001 was added to all probabilities to show zero values. Note that this is not a total dispersal kernel but solely shows secondary dispersal by car's airflow.